Monazite

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Physical & Optical Properties

Mohs Hardness 5,0 – 5,5
Specific Gravity 4,8 – 5,5
Refractive Index 1,796 – 1,841
Crystal System Monoclinic
Cleavage Perfect
Color various
Birefringence 0,045

Mohs Hardness

Mohs Hardness: 5,0 – 5,5
1 Soft10 Hard

Crystal System

β a b c Monoclinic a ≠ b ≠ c, α = γ = 90°, β ≠ 90°

Value & Market

Price Tier Budget (< $50/ct)

About Monazite

La monacita es un fosfato de tierras raras —principalmente cerio, lantano, neodimio y praseodimio— que forma cristales prismáticos o tabulares de color marrón amarillento a rojo pardo con lustre resinoso a ceroso. Es la principal fuente comercial de tierras raras ligeras y torio, minerales críticos para imanes permanentes, catalizadores y tecnología de energía limpia. Sus cristales transparentes son raros y de interés mineralógico, hallándose en pegmatitas de granito, gneises y depósitos aluviales de Brasil, India, Australia y Madagascar.

Jewelry Use

Durability 4/10

Science FYI Family

Frequently Asked Questions

What is Monazite?
La monacita es un fosfato de tierras raras —principalmente cerio, lantano, neodimio y praseodimio— que forma cristales prismáticos o tabulares de color marrón amarillento a rojo pardo con lustre resinoso a ceroso. Es la principal fuente comercial de tierras raras ligeras y torio, minerales críticos
What is the hardness of Monazite?
Monazite has a Mohs hardness of 5.0 to 5.5, making it moderate for use in jewelry.
What color is Monazite?
Monazite is primarily Various.
How much does Monazite cost?
Monazite falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Monazite?
Monazite belongs to the Monoclinic crystal system.

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